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DNS Transport over TCP - Implementation Requirements (RFC5966)

IP.com Disclosure Number: IPCOM000199038D
Original Publication Date: 2010-Aug-01
Included in the Prior Art Database: 2010-Aug-24
Document File: 14 page(s) / 15K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Bellis: AUTHOR

Abstract

Most DNS [RFC1034] transactions take place over UDP [RFC0768]. TCP [RFC0793] is always used for zone transfers and is often used for messages whose sizes exceed the DNS protocol's original 512-byte limit.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 18% of the total text.

Internet Engineering Task Force (IETF)                         R. Bellis Request for Comments: 5966                                    Nominet UK Updates: 1035, 1123                                          August 2010 Category: Standards Track ISSN: 2070-1721

           DNS Transport over TCP - Implementation Requirements

Abstract

   This document updates the requirements for the support of TCP as a    transport protocol for DNS implementations.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    http://www.rfc-editor.org/info/rfc5966.

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    (http://trustee.ietf.org/license-info) in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

Bellis                       Standards Track                    [Page 1]
 RFC 5966                      DNS over TCP                   August 2010

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3    2.  Terminology Used in This Document . . . . . . . . . . . . . . . 3    3.  Discussion  . . . . . . . . . . . . . . . . . . . . . . . . . . 3    4.  Transport Protocol Selection  . . . . . . . . . . . . . . . . . 4    5.  Connection Handling . . . . . . . . . . . . . . . . . . . . . . 5    6.  Response Reordering . . . . . . . . . . . . . . . . . . . . . . 6    7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6    8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 7    9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 7      9.1.  Normative References  . . . . . . . . . . . . . . . . . . . 7      9.2.  Informative References  . . . . . . . . . . . . . . . ....